Boris Mann

Open Source. Community. Decentralized Web. Building dev tools at Fission. Cooks & eats.


Ever wonder where MIME types come from?

  • May 13, 2003

It turns out that IANA (the Internet Assigned Numbers Authority) is also responsible for registering MIME types.

You can also go to IANA to find out who/what owns various top-level domains (TLDs) and the various ccTLDs (country code TLDs). My dreams of registering were dashed when I found out that Western Sahara owns .eh. And they don’t have a registry.

What was I doing? I was working on a PHP script that will set a file for download, setting the header “Content-Type” to the specific type of file. In my case, a comma-separated value (CSV) file. Closest thing is application/, which is probably where I want it to end up anyways.